lol im a fuckin dork

lib/interval.py

@@ -1,12 +1,22 @@
 from datetime import timedelta
+from statistics import mean
 
 SCALES = [
     ('minutes', timedelta(minutes=1)),
     ('hours', timedelta(hours=1)),
     ('days', timedelta(days=1)),
     ('weeks', timedelta(days=7)),
-    ('months', timedelta(days=30)),
-    ('years', timedelta(days=365)),
+    ('months', timedelta(days=
+    # you, a fool: a month is 30 days
+    # me, wise:
+        mean((31,
+            mean((29 if year % 400 == 0
+                        or year % 100 != 0 and year % 4 == 0
+                    else 28
+                    for year in range(400)))
+            ,31,30,31,30,31,31,30,31,30,31))
+        )),
+    ('years', timedelta(days=365.25)),
 ]
 
 def decompose_interval(attrname):